Liberal actor Mark Duplass was shamed into deleting a tweet and issuing an apology after he praised Jewish conservative pundit Ben Shapiro as a “genuine person.”

In a now deleted tweet, Mr. Duplass, whose credits include “The League,” “The Mindy Project” and “Goliath,” suggested that liberals interested in keeping an open mind about politics should follow Mr. Shapiro.

“Fellow liberals: If you are interested at all in ‘crossing the aisle’ you should consider following @benshapiro,” he wrote. “I don’t agree with him on much but he’s a genuine person who once helped me for no other reason than to be nice. He doesn’t bend the truth. His intentions are good.”

The tweet triggered a wave of backlash from liberals, prompting Mr. Duplass to delete the tweet and issue a groveling apology for not being more “diligent and careful.”

“So that tweet was a disaster on many levels,” he wrote. “I want to be clear that I in no way endorse hatred, racism, homophobia, xenophobia, or any such form of intolerance. My goal has always been to spread unity, understanding and kindness. But I am going to make mistakes along the way. Sometimes I move too quickly when I get excited, or fail to do enough research, or I don’t communicant myself clearly. I’m really sorry. I now understand that I have to be more diligent and careful. I’m working on that.

“But, I do believe deeply in bi-partisan understanding and I will continue to do my best to promote peace and decency in the world right now,” he continued. “That said, I hear you. And I want to say thank you to those who reached out with constructive criticism. I have genuinely learned so much and wish everyone all the best.”